21085831

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{1307}}^1$

素因数の和:1410

約数の個数: 16

約数和(自身を含む): 24391584

約数和(自身を除く): 3305753

約数列:

[1, 13, 17, 73, 221, 949, 1241, 1307, 16133, 16991, 22219, 95411, 288847, 1240343, 1621987, 21085831]

約数ペア:

[(1, 21085831), (13, 1621987), (17, 1240343), (73, 288847), (221, 95411), (949, 22219), (1241, 16991), (1307, 16133)]